#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>


using std::cout;
using std::endl;
using std::cin;
namespace bit
{
	namespace zs
	{
		void Push()
		{
			cout << "zs" << endl;
		}
	}

	namespace ls
	{
		void Push()
		{
			cout << "ls" << endl;
		}
	}
}

int main()
{
	int i = 0;
	std::cin >> i;

	cout << "xxxxxx" << endl;
	cout << "xxxxxx" << endl;
	cout << "xxxxxx" << endl;
	cout << "xxxxxx" << endl;

	bit::zs::Push();
	bit::ls::Push();

	return 0;
}